Changing-gearing for automobiles.



M. FISCHER.

CHANGING GEARING FOR AUTOMOBILES.

APPLICATION FILED AUG. 1, w11.

allllmmvmwmmuam Ptented Feb. 3, 1914.

'.prnainaisrarnernrrja` nennen,

MARTIN FISCHER, OF ZURICH, SWITZERLAND, ASSIGNOR TO MOTOR AND GEAR IMPROVEMENT COMPANY, .A CORPORATION OF NEW YORK.k

CHANGING-GEARXNG FOR AUTOMOBILES.

rossore.

Specification of Letters Patent.

Patented Feb. 3, 19t/1t.

To all 107mm it may co'mfcrn:` v

lle it known that l, MARVIN FISCHER, citi- Zen of Switzerland, residing at Zurich, Switzerland, have invented new and useful Improvements in Changing-Gearing for r-iutomobiles of which the following is a specication.

jointed shaft carries a pinion at one end adapted to mesh with the different sized gear wheels when the .speed of the vehicle vis to be. changed, and in makin'g'such change the parts are liableto conside 1alole shock and strain causing 'derangemen or forcing of the `fears out of anesh which it is the main purpose of my invention to avoid in order to insure efficiency of the gearing, smoothness of running, absence of noise and other desired qualifications.

In the preferred form of the invention the means which I employ for obviating derangement. and other troubles due to the shock and strain consists of a suitably slotted plate which acts as a guide for the... movement of the universally jointed shaft and its pinion in changing from one gear to another, arranged ina suitable way and in such combination as I will hereinafter describe. Y

Then shifting" a gear carried on a shaft not fixed ly srlpported, it has been ljieretofore imprau'tical to get and to preservesufliciently accuratemeshing of the gears to insure satisfactory and practical results. By my invention I insure permanently such accuracy and stability of meshingr of the gears that a most perfect and durable change gearing, as a whole, is obtained.

Other features of my construction ,give unusual compactl'iess, strength and eliiciency.

The preferred cn'ibodiment o-f my invention is illustrated in 4the accompanyingdrawing", wherein- Figure 1 is a vertical longitudinal section illustrative of the invention; and Fig. 2 is a horizontal sectional view thereof.

Referringr to the drawing Q() designates a yoke connected to the motor shaft, 2l the shaft which is universally jointed at to the -motor shaft.

10 designates the gear case or box havmg' legs or hollow supporting standards 7 for the guide plate 1 provided with the suitably formed. slot 4. vThe guide plate 1 is firmly secured to the gear case by means of the threaded bolts (i, said guide plate eX tending rearvvardlya sufficient distance to enter the space within the internally toothed gear wheels 23, 24 and 25.l These gear wheels are formed rigidly with a sleeve or shaft 26 which serve to drive the rear axle in any well-known manner and which I have not deemed it necessary to illustrate. At its rear or inner end the universally jointed shaft 21 is provided with the pinion 22 adapted to selectively mesh with any of t-he gear wheels `23, 24, or Q5. Adjacent the pinion 22, the shaft 21 is surrounded by a sleeve Q having a depending portion passing through the slot Je in the plate 1, said'depending portion terminating in a head or abut-ment 5 so as to prevent the sleeve 2 from workingl out of the slot #t 1n the plate -1. The numeral S in the drawing represents a substantially'annular opening in the plate 1 through which opening the depend ing portion of the sleeve 2 is inserted when the parts are assembled. By this arrangement it will he seen that the plate 1 projects ihto the internal gear crown, and that the 85 plate is very rigidly supported on casing 10, which also supports the gear crown, thereby holding plate 1 in rigid relation with the' gear crown and the-gears 23, 24 .and 25;

while the 'bearing block 3 is rigidly sup- 30 ported on plate 1 close to theend'of the plate projecting into the gears, and that the bearing block 2 supports shaft 21 immediately adjacent to the pinion 22. Consequently the combination gives a rigid supment of the lever 12 the sleeve 2 with the shaft 21 and the pinion may be suitably shifted to engage any of "he gear wheels '23, 2st or Q5. The shaft Q1 is lsurrounded by a spring' 9 tending; to return the sleeve 2 to initial position when pressure 1s removed from the operating lever 12.

lVhilc changes may be made from the details, or otherwise, from the particulanform shown and described it VWillbe understood that such may be done without departing from my invention, but

v-What I claim and desire to secure by Letters Patent is l 1. In combination in a 'change gear mechanism, a flexibly jointed drive shaft, a casin v nai gears, a pinion on said' shaft adapted to engage said' internal gears, a movable bearing block supporting said shaft. iin-v 'mediately adjacent to said pinion, a plate supported in rigid relation to said internal gears and projecting into the crown or claslng carrying said gears, means to sup ort said bearing block rigidly in predetermined `positions on said plate in close Proxim'ty carried .by said .ca-sing said internal gears, a aring block a apted t9 he rigidly supported in` a plurality of po-' or crown having a plurality of inter-,Q

a p laterlgidly sitions onvsaid plate and supporting the end i of said power shaft immediately adjacent to the pinion, and means for shifting said pinion to different positions 4of meshing with the respective internal'gears.

3. In combination in a change gear mechanism a laterally movable power shaft connecte at one end to aitiexible joint and a rigidly secured pinion carried at the other end, a crown or casing embodying a plurality of internal gears into which the pinion endof said shaft is-adapted to project and engage with the internal gears, respectively, a plate for supporting said pinion projecting into the Acrown of internal gears, a block supported on said plate and adapted to` hold said pinion in rigid relation with i'said plate, said plate having a guide lslot with a plurality of notches, and a projection from said block in close proximity to said pinion to lock the pinion rigidly to said plate in predetermined positions for engagement with the respective internal gears.

In 'testimony whereof' I have signed my name to this specification in the presence'of two subscribing Witnesses.

MARTIN FISCHER. `Witnesses:

. JOHANNES ARMUND,

I ,AUGUST REGG. 

